An audiogram is often a graph of Listening to thresholds at various frequencies in Each and every ear. Thresholds which might be 25 dB HL (hearing degree) or superior (lessen) are considered regular for Grownups. Noise exposure at first impacts hearing most at frequencies about 3000-6000 Hz, creating a "notch" https://professionalmeetingavequi55543.slypage.com/38017300/not-known-factual-statements-about-conference-room-technology